Load-handling mechanism



17, 1931. 5 REMDE LOAD HAKDLING MECHANISM 7 Filed June 22, 1925 5 mm L Mann Patented Mar. 17, 1931 UNITED s'rmazs EDWARD H. REMDE, OE CLEVELAND, OHIO,

PAIIY, OI? CLEVELAND, OHIO,

AssIeNon TO THE BAxEn-nAnLAne com A CORPORATION or 01110 LOAD-HANDLING MECHANISM I Application filed June 22,

This invention relates to a load handling mechanism, more particularly to an industrial truck of the crane type. a

One object of the invention is to provide,

'5 in apparatus or mechanism of this character, an auxiliary boom units, elements or loads and maintaining them in elevated position, whereby the apparatus-v may be adapted to varied uses, conditions and operations.

Another object of the invention is to provide a mechanism of this character with a separate boom, which may be correlated with the main boom to efl'ect manydifierent operations in supporting loads and positioning them at intermediate elevations for making assemblies, disassemblies and repairs.

Other objects of the inventiomwill be apparent to those skilled in the art to which my 2 invention relates from the following description taken in connection with the accompany ing drawing, wherein Fig. 1 is a side elevation of a mechanism embodying my invention.

Fig. 1a is a fragmentary the extension member.

F1 g. 2 is a fragmentary plan view of the main-boom showing the extension member side view showing mounted thereon in its inoperative position.

Fig. 3 1s a section on the line 3-3 of Fig. 2. Fig. at is a section on the line 4-4 of Fig. 1. Fig. 5 is a section on the line 55 of Fig. 1. In the form of the invention disclosed in the drawings, a boom. 40 is mounted on a mo tor powered truck equipped with the usual facilities including electric motors and con nccted cable winding means. a

51 indicates a pair of plates verticall disposed on the base at opposite sides of and slightly forward of the opening therein for a shaft and provided with hollow bosses which form bearings for a pivot pin 52 on which the boom 40 is pivotally supported. The plates 51 are formed withiopenings aligned I with the bearing openings in the" bosses through which the pivot pm extends.

The boom 40 preferably comprises a pair of channel members4fia arrangedin s aced relation, but slightly converging towar their upper ends. The upper portions of thememcapable of lifting parts,

with nuts 54 to prevent the pin 1925. Serial No. 38.047.

bers 400; may be curved forwardly and downwardly. he channel members are secured together in spaced relation by a plurality of cross-pieces 40b, 40c, 40d, 40d and diagonal pieces 406. At a point remote from their free ends, the members standing plates 53, the purpose of which will later appear. The lower ends of the channel bars 40a are provided with suitable knuckles 4000 through which the pivot pin 52 extends, the opposite ends of the pin being provided from moving ent lwise in the knuckles and bosses. The boom 40 is raised andlowered about the pivot pin 52 by any suitable means, but preferabl by means of a cable or other flexible connection 40 connected to the operating means.

55 indicates as an entirety a member for engaging a. load, whereby the load may be raised or lowered or otherwise handled. The load engaging member preferably comprises a hook depending from a; casing 56, which in turn 1s supported or suspended from the free end of the boom 40 by a cable or other flexible connection 57 connected with the operatingmeans.

It will be understood that the load is raised and lowered by winding the cable or rope 57 on or unwinding it from one drum of the cable ,winding means, swung upwardly or the cable or rope 40 and the boom 40 is downwardly by winding and the support 33 is swung or rotated about the shaft 33 by the operation of the motor 76.

170. indicates an auxiliary boom adapted to be detachably and pivotally connected at its inner end to the boom 40 and supported at or near its outer end by the load engaging element 55 which detachably engages therewith.

40a are provided with upyea on or unwinding it from I the other drum of the cable winding means The auxiliary boom 170 may e of any de- .s'ired length and ispreferably formed from a airof channel bars securedtogether back to ack in any desired manner. The connection of the auxiliary boom 17 0 with the main boom 40 is preferably of the universal joint type. Near the outer end of the auxiliary boom I provide an upstanding plate 178. The plate 178 is formed with one or more openings 179, in which the hook 55 is inserted to support the outer end of the boom 17 0. The plate 178 is preferably clamped between the channel bars constituting the auxiliary boom. 180 indicates a load engaging device suspended from the auxiliary boom, preferably near its free end. This device may be of any desired form, depending upon the shape and nature of the load that is to be engaged, but it is herein illustrated as a hook having a swiveled shank connected by links to a cross bar 181 supported in openings formed in the bars of the auxiliary boom 170. The device 180 may be used to detachably connect the free end of the boom 170 to the main boom 40, as shown in dotted lines in Fig. 1, to hold it in an inoperative position when not in use or when the loading engaging member 55 is being used to handle loads. When the boom 170 is moved into such position, the hook 180 may engage the edge of the cross pin 400. The auxiliary boom 17 0 may be detached by removing the hook 55 from the opening 17 i) and removing elements of the universal joint at its inner end. \Vhen the auxiliary boom 170 is removed or positioned in its inoperative position, the

main boom 40 and the load engaging member 55 are capable of being operated in the usual manner to raise and lower loads to and from varying positions at either side of the truck frame 1. When the auxiliary boom 170 is arranged as shown in Fig. 1', the apparatus may be utilized to perform various load handling operations, for example, in making machine assemblies, the auxiliary boom 170 may be operated to lift a part, unit or element and support it while being moved to the place of assembly and there held in position while assembly is effected. By reason of the fact that the hoist mechanism is utilized to support the outer end of the auxiliary boom and its inner end bas universal joint connection with the main boom 40, it will be seen that the load can be adjusted up or down and laterally to facilitate its positioning for connection with or in the machine being assembled. Furthermore, by swinging the main boom 40 up or down, adjustmentof the load in an endwise direction can also be made. As the boom 170 extends laterally in a substantially horizontal direction, it can be used to support and position parts, units and elements below or underneath a frame or structural part.

In one practical application of my invention, apparatus embodying the same has been used for supporting and positioning parts and elements along and below or underneath structural parts of a locomotive during the building and assembly thereof.

7 The auxiliary boom 170 may be used for engaging and moving parts, units and elements where disa'ssembly or repair of a machine is being carried out.

183 indicates an extension member adapted to be removably supported on the free end of the main boom 40 and support parts, umts and elements for assembly purposes in or at relatively high elevations or to engage the same for disassembl thereof. The extension member prefer-a ly comprises a tubular bar adapted to extend through an opening 184 formed in the plate 40d and removably fit a socket 185, rigidly supported between the boom bars 40a near their free ends, being held therein by a pin 183a. The socket comprises a U-sh'aped plate 185a, connected at its ends to a cross member 185?), which is secured to the bars 40a (see Fig. 5). The extension member extends endwise from the main boom 40 and carries at its outer end a depending hook or other device 185 by means of which it may support a load. When removed from the socket 185, the extension member 183 may be removably secured to the boom l0, preferably by -means of a socket 186 into which its inner end fits and a clamping block 187 carried by one of the bars 40a, the block 187 being provided with a hinged plate 1874 which engages the extension member to hold it on the block 187. The plate 187a secured in clamping position by a suitable device 187?). As the extension member 183 is rigidly carried by the boom 40 and extends from the free end thereof, operation of the boom 40 will swing the outer end of the extension -member to adjust its suspension hook 185 or the load carried thereby as desired.

' To those skilled in the art to which my invention relates many alterations in construction and widely difl'ering embodiments and applications of the invention will suggest themselves without departing from the spirit and scope thereof. The disclosures and the description herein are purely illustrative and are not intended to be in any sense limiting.

What I claim is:

In apparatus of the class described, the combination of a frame, a main boom pivoted at its inner end thereon, a load hoisting mechanism having a load engaging member suspended from the outer portion of said boom. an auxiliary boom connected at its inner end by a universal joint to said main boom and arranged to be engaged and operated by said load engaging member.

In testimony whereof, I have hereunto subscribed my name.

EDWARD H. REMDE. 

